At the age of 19 he already was world heavy weight kickboxing champion.
In 1994 Peter became K-1 World champion for the first time.
Peter gained his 2nd and 3rd K-1 title in 1995 en 1998. In 1995 he became World Muay Thai Super Heavyweight Champion as well.
Peter got his nickname “Lumberjack” due to his devastating low kicks, a trademark of the Dutch style.
Peter started his professional kickboxing career in 1985 and won his first world title in 1989. After training at several famous gyms in The Netherlands Peter moved in 1991 to Chakuriki Gym under trainer Thom Harinck. In the same year Peter became World Heavyweight Muay Thai Champion by defeating legendary Frank Lobman by unanimous decision. Peter Aerts debuted in K-1 in 1993 and defeated Peter Selkthorpe in the first round by knockout,
In 1994 Peter won his first K-1 title by defeating Masaaki Satake. In 1995 Peter he won the K-1 World Grand Prix again by winning from Jerome Le Banner.
In 1997 Peter lost against Andy Hug by unanimous decision but in 1998 he came back against Andy Hug again in the final and knocked Andy down in 1 minute and 10 seconds.
Though Peter didn’t win any K-1 finals after that Peter at his late 30’s still matched and won from many world class kickboxers in K-1 tournaments.
Recently he announced his retirement fight against Tyrone Spong that will be held on June 30th 2012 in Brussels.
International Kick Boxing Federation IKBF World Heavyweight Championship (1990)
K-1 1994 K-1 World Grand Prix Champion
1995 K-1 World Grand Prix Champion
1998 K-1 World Grand Prix Champion
2001 K-1 World Grand Prix in Las Vegas runner up
2003 K-1 World Grand Prix 3rd place
2006 K-1 World Grand Prix runner up
2007 K-1 World Grand Prix runner up
2010 K-1 World Grand Prix runner up
Muay Thai Bond Nederland MTBN World Heavyweight Muay Thai Championship (1992)
Night of the Stars 1994 The Night of the Stars tournament champion
World Muay Thai Association WMTA World Heavyweight Muay Thai Championship (1991)
WMTA World Super Heavyweight Muay Thai Championship (1995)